Attachable leveling system

ABSTRACT

A vehicle leveling system includes a jack adapted to be mounted to a vehicle frame without modifying the vehicle frame. In a particular embodiment, the jack includes a first bracket adapted to urge against the bottom and side surfaces of a member of the frame and configured to be fastened to a member of the frame through a manufacturer-provided aperture in the frame. The jack additionally includes a second bracket to couple the first bracket to the jack. In a more particular embodiment, the first bracket includes a horizontal adjustment feature, and the second bracket includes a vertical adjustment feature.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of co-pending U.S. patentapplication Ser. No. 15/703,228, filed on Sep. 13, 2017 by the sameinventors, which claims the benefit of U.S. Provisional PatentApplication Ser. No. 62/394,900, filed on Sep. 15, 2016 by the sameinventors, both of which are incorporated herein by reference in theirrespective entireties.

BACKGROUND OF THE INVENTION

Field of the Invention

This invention relates generally to leveling systems for vehicles, andmore particularly to attachable leveling systems configured for jackinga vehicle frame.

Description of the Background Art

Recreational vehicles (RVs) are popular for travel and camping.Increasingly, non-recreational utility vehicles are being converted intoRVs. For example, the Mercedes Benz Sprinter 3500 is a cargo van,typically used for commercial applications, which is a popular vehiclefor RV conversion. When converting general-use vehicles to an RV, itoften becomes necessary to consider a leveling system for the vehicle,because most general-use vehicles do not come equipped with one.

Sometimes stand-alone jacks are placed under a converted RV to lift theRV for leveling purposes. This is disadvantageous, however, because thejacks need to be stored (e.g., in a vehicle compartment) when not in useand some work is required to place and extend the jacks for leveling.One solution to these problems is to drill holes into the frame of thevehicle and attach jack(s) using these newly-drilled holes.Unfortunately, this solution is also disadvantageous, because drillinginto “no-drill zones” in the frame can void a manufacturer's warrantyand/or create a safety hazard, for example, by weakening the frame.

SUMMARY

The present invention overcomes the problems associated with the priorart by providing a vehicle leveling system adapted to be mounted to avehicle without permanently modifying the vehicle's frame.

The vehicle leveling system includes a first jack and a frame engagingfeature. The first jack is extendable between a stowed position and adeployed position and includes an upper region and a lower region. Thefirst frame engaging feature is coupled to the upper region of the firstjack and is adapted to engage a frame of the vehicle without permanentlymodifying the vehicle's frame.

In a particular embodiment, the first frame engaging feature includes afirst frame engaging bracket adapted to urge against a bottom surface ofthe frame when the first jack is in the deployed position. In a moreparticular embodiment, the first frame engaging feature includes a firsthorizontal adjustment feature facilitating horizontal adjustment of afixed horizontal position of the first frame engaging bracket withrespect to the first jack. Even more particularly, the first frameengaging feature further includes a second frame engaging bracket and asecond horizontal adjustment feature. The second frame engaging bracketis adapted to urge against the bottom surface of the frame when thefirst jack is in the deployed position, and the second horizontaladjustment feature facilitates horizontal adjustment of a fixedhorizontal position of the second frame engaging bracket with respect tothe first jack. In a specific example, the first and/or secondhorizontal adjustment feature includes a horizontal elongated slot and abolt, the horizontal elongated slot is formed in the associated frameengaging bracket, and the bolt is disposed in the horizontal elongatedslot and is horizontally fixed with respect to the first jack. Inanother more particular embodiment, the first and/or second frameengaging bracket includes a lip adapted to engage a side wall of thevehicle frame.

In another particular embodiment, the leveling system further comprisesa mounting structure coupled to the upper region of the first jack. Themounting structure is adapted to be mounted to a surface of the vehicleadjacent the frame and is further adapted to vertically support theweight of the first jack when the first jack is in the stowed position.In a more particular embodiment, the mounting structure includes avertical adjustment feature facilitating vertical adjustment of a fixedvertical position of the first frame engaging feature with respect tothe mounting structure. In an even more particular embodiment, themounting structure includes at least one bracket, and the verticaladjustment feature includes a vertical elongated slot and a bolt. Thebracket is adapted to be fixably mounted to the surface of the vehicleadjacent the frame. Additionally, the vertical elongated slot is formedin the bracket, and the bolt is disposed in the vertical elongated slotand is vertically fixed with respect to the first jack. In anotherparticular embodiment, the vertical adjustment feature includes a firstbracket and a second bracket, where each of the first and secondbrackets is adapted to be fixably mounted to the surface of the vehicleadjacent the frame. Additionally, the first bracket and the secondbracket are each vertically adjustable with respect to the first jack,and the first bracket and the second bracket are independentlyadjustable. The surface of the vehicle adjacent the frame can be a floorof the vehicle, for example of the passenger cabin. Optionally, thefloor can be a portion of a uni-body.

In another embodiment, the leveling system further includes a secondjack and a second frame engaging feature. The second jack is extendablebetween a stowed position and a deployed position and includes an upperregion and a lower region. The second frame engaging feature is coupledto the upper region of the second jack and is adapted to engage theframe of the vehicle without permanently modifying the frame. In a moreparticular embodiment, the vehicle leveling system further includes across-member having a first end and a second end, where the first end iscoupled to the first jack and the second end is coupled to the secondjack.

In yet another particular embodiment, the vehicle leveling systemfurther includes a bracket fixably coupled to the first jack anddefining a first aperture and a second aperture. The first aperture isdisposed to be coaxially aligned with a first manufacturer-providedaperture in a vehicle frame when the second aperture is coaxiallyaligned with a second manufacturer-provided aperture in the vehicleframe. In a more particular embodiment, the vehicle leveling systemfurther includes a first bolt and a second bolt. The first bolt isadapted to be simultaneously disposed through the first aperture of thebracket and the first manufacturer-provided aperture in the vehicleframe. Similarly, the second bolt is adapted to be simultaneouslydisposed through the second aperture of the bracket and the secondmanufacturer-provided aperture in the vehicle frame. In another moreparticular embodiment, the vehicle leveling system further includes asecond jack extendable between a stowed position and a deployedposition. The second jack includes a bracket fixably coupled to thesecond jack, and the bracket of the second jack defines a first apertureand a second aperture. The first aperture of the bracket of the secondjack is disposed to be coaxially aligned with a thirdmanufacturer-provided aperture in the vehicle frame when the secondaperture of the bracket of the second jack is coaxially aligned with afourth manufacturer-provided aperture in the vehicle frame. In an evenmore particular embodiment, the vehicle leveling system includes across-member having a first end coupled to the first jack and a secondend coupled to the second jack.

In another embodiment, a vehicle leveling system includes a first jack,a first bracket, a second bracket, a second jack, a third bracket, afourth bracket, and a cross-member. The first bracket is coupled to thefirst jack and is adapted to urge against a bottom surface of a vehicleframe when the first jack is in a deployed position. The first bracketincludes a horizontal adjustment feature for horizontally adjusting thefixed horizontal position of the first bracket with respect to the firstjack. The second bracket is coupled to the first jack and is adapted tomount to a surface of the vehicle adjacent the vehicle frame. The secondbracket includes a vertical adjustment feature for vertically adjustingthe fixed vertical position of the second bracket with respect to thefirst jack. The third bracket is coupled to the second jack and is alsoadapted to urge against a bottom surface of the vehicle frame when thesecond jack is in a deployed position. The third bracket includes ahorizontal adjustment feature for horizontally adjusting the fixedhorizontal position of the third bracket with respect to the secondjack. The fourth bracket is coupled to the second jack and is adapted tomount to a surface of the vehicle adjacent the vehicle frame. The fourthbracket includes a vertical adjustment feature for vertically adjustingthe fixed vertical position of the fourth bracket with respect to thesecond jack. The cross-member is fixably coupled to the first jack andthe second jack.

A method for attaching a jack to a vehicle is also disclosed. The methodincludes the steps of providing a jack having a first set of supportfeatures (e.g., a first set of brackets) and a second set of supportfeatures (e.g., a second set of brackets) adjustably mounted thereto,mounting the first set of support features to a surface (e.g., a floor)of the vehicle adjacent a frame of the vehicle, positioning the secondset of support features under the frame, lifting the jack such that thesecond set of support features engages an underside of the frame, andsecuring the jack in position relative to the frame and to the surfaceof the vehicle (e.g., by securing the first and the second sets ofsupport features to the jack and securing the first set of supportfeatures to the surface of the vehicle).

Another method for attaching a jack to a vehicle includes the steps ofproviding a jack having a first frame engaging feature and a secondframe engaging feature; aligning the jack with the frame such that thefirst frame engaging feature is aligned with a firstmanufacturer-provided feature of the frame and the second frame engagingfeature is aligned with a second manufacturer-provided feature of theframe, securing the first frame engaging feature to the firstmanufacturer-provided feature, and securing the second frame engagingfeature to the second manufacturer-provided feature. Optionally, thismethod can be used to attach a second jack to a vehicle in combinationwith the method described in the prior paragraph.

A system configured to couple a jack to a vehicle without altering aframe of the vehicle is also disclosed. The system includes a first setof support features (e.g., a first set of brackets, etc.) and a secondset of support features (e.g., a second set of brackets, etc.). Thefirst set of brackets is configured to be coupled to a jack and to beaffixed to a surface of the vehicle adjacent the frame. The second setof brackets is configured to be coupled to the jack and to abut a bottomsurface of the frame so as to be able to exert a lifting force on theframe when the jack is actuated.

In a particular embodiment, the system further includes an intermediatestructure (e.g., an intermediate bracket, such as a U-bracket, etc.)configured to be affixed to the jack. Additionally, each of the firstset of brackets and the second set of brackets is configured to beadjustably attached to the intermediate bracket.

In another particular embodiment, each bracket of the first set ofbrackets includes an elongated fastening region to facilitate generallyvertical adjustment of the bracket of the first set with respect to thejack. Still more particularly, the elongated fastening region comprisesa set of slotted holes formed in the bracket of the first set ofbrackets.

In still another particular embodiment, each bracket of the second setof brackets includes a lip extending upward with respect to a bottomsurface of the bracket of the second set. The lip prevents the framefrom moving laterally with respect to the jack when the jack isactuated. In a more specific example, each bracket of the second set ofbrackets is a J-shaped bracket. In another more particular embodiment,each bracket of the second set of brackets includes an elongatedfastening region (e.g., a set of slotted holes formed in the bracket,etc.) to facilitate generally horizontal adjustment of the bracket withrespect to the jack.

A system for attaching a jack to a vehicle frame havingmanufacturer-provided features is also described. The system includes anintermediate structure and a set of fasteners. The intermediatestructure (e.g., a bracket, a U-bracket, etc.) defines a set ofapertures therethrough and is configured to be affixed to a jack. Theapertures of the intermediate structure are disposed at locationscorresponding to locations of the manufacturer-provided features (e.g.,apertures) in the frame. Each fastener (e.g., bolt) in the set offasteners is configured to be disposed simultaneously through at leastone of the apertures in the intermediate bracket and through at leastone of the manufacturer-provided apertures, whereby the intermediatebracket will be disposed adjacent the frame of the vehicle wheninstalled. Additionally, when the system in installed on the jack andthe frame and the jack is actuated, a lifting force is transferred fromthe jack to the frame via the intermediate structure and the set offasteners.

A jack system for providing a vehicle with leveling capability is alsodescribed. The system includes a set of front jacks, a first set offront brackets, a second set of front brackets, a set of rear jacks, aset of rear brackets, and a set of rear fasteners. Each bracket of thefirst set is configured to couple to one of the front jacks and to asurface of the vehicle adjacent its frame. Each bracket of the secondset is configured to couple to one of the front jacks and to engage abottom surface of the vehicle's frame. Additionally, each rear bracketis configured to be fixed to one of the rear jacks and includes a set ofapertures that are disposed to coaxially align with a set ofmanufacturer-provided apertures formed in the frame. The set of rearfasteners is configured to attach the set of rear brackets adjacent tothe frame via the set of manufacturer-provided holes. When the system isinstalled and the jacks are actuated, each bracket of the second set offront brackets exerts an upward force on the frame, and each of the rearbrackets exerts an upward force on the frame via the set of rearfasteners and the set of manufacturer-provided apertures.

Another vehicle leveling system is also described. The system includes afirst jack and a first frame engaging bracket. The first jack isextendable between a stowed position and a deployed position. The firstjack has an upper portion and a lower portion extendable with respect tothe upper portion. The first frame engaging bracket is coupled to theupper portion of the first jack and includes a horizontal surface and avertical surface. The horizontal surface of the first frame engagingbracket is positioned to urge against a bottom surface of a member ofthe vehicle frame. The vertical surface of the first frame engagingbracket extends upwardly from a side edge of the horizontal surface, isdisposed to abut a side surface of a member of the vehicle frame, anddefines a first aperture disposed to be aligned with a firstmanufacturer-provided aperture in the member of the vehicle frame.

In a particular embodiment, the vertical surface of the first frameengaging bracket defines a second aperture disposed to be aligned with asecond manufacturer-provided aperture in the member of the vehicle framewhen the first aperture of the vertical surface is aligned with thefirst manufacturer-provided aperture in the member of the vehicle frame.In more particular examples, the first and/or second apertures of thevertical surface of the first frame engaging bracket are verticallyelongated slots.

In yet another particular embodiment, the first frame engaging bracketincludes a lip extending upwardly from a second side edge, opposite theside edge of the horizontal surface of the first frame engaging bracket.In a particular example, the lip extends upwardly a sufficient distanceto abut a second, opposite side of the member of the vehicle frame. Thehorizontal surface, the vertical surface, and the lip limit the rotationof the member of the vehicle frame within or with respect to the frameengaging bracket.

In another particular embodiment, the vehicle leveling system furtherincludes an adjustment feature for adjusting a fixed position of thefirst frame engaging bracket with respect to the upper portion jack. Inan even more particular embodiment, the adjustment feature includes avertical adjustment feature for vertically adjusting the fixed positionof the first frame engaging bracket with respect to the upper portion ofthe jack. In an even more particular embodiment, the first jack includesa mounting bracket coupled to the upper portion of the first jack. Inaddition, the vertical adjustment feature includes a first verticalcolumn of apertures formed in at least one of the first frame engagingbracket and the mounting bracket of the first jack. In an example, theother of the at least one of the first frame engaging bracket and themounting bracket of the first jack includes a first horizontal row ofapertures facilitating horizontal adjustment of the fixed position ofthe mounting bracket of the first jack with respect to the first frameengaging bracket. In a more specific example, the first vertical columnof apertures includes a vertical column of horizontally elongated slotsand the first horizontal row of apertures includes a horizontal row ofhorizontally elongated slots.

In another particular embodiment, the adjustment feature includes ahorizontal adjustment feature for adjusting the fixed horizontalposition of the first frame engaging bracket with respect to the jack.In a more specific example, the first jack includes a mounting bracketcoupled to the upper portion of the first jack and the horizontaladjustment feature includes a first horizontal row of apertures formedin at least one of the first frame engaging bracket and the mountingbracket of the first jack. In an more specific example, the firsthorizontal row of apertures includes a plurality of horizontallyelongated slots.

In a particular embodiment, the vehicle leveling system further includesan adjustment feature for vertically adjusting the fixed position of thefirst frame engaging bracket with respect to the member of the vehicleframe.

In another particular embodiment, the vehicle leveling system furtherincludes a second jack and a second frame engaging member. The secondjack is extendable between a stowed position and a deployed position.The second jack has an upper portion and a lower portion extendable withrespect to the upper portion. The second frame engaging bracket iscoupled to the upper portion of the second jack. The second frameengaging bracket includes a horizontal surface and a vertical surface.The horizontal surface of the second frame engaging bracket ispositioned to urge against a bottom surface of a second member of thevehicle frame. The vertical surface of the second frame engaging bracketextends upwardly from a side edge of the horizontal surface of thesecond frame engaging bracket, is disposed to abut a side edge of asecond member of the vehicle frame, and defines a first aperturedisposed to be aligned with a second manufacturer-provided aperture inthe second member of the vehicle frame.

An example method is also described. The method includes providing afirst jack, a first mounting structure, and a first fastener. The firstjack has an upper portion and a lower portion extendable with respect tothe upper portion. The first mounting structure has a horizontal surfaceand a vertical surface. The vertical surface extends upwardly from thehorizontal surface and defines an opening. The method also includescoupling the first mounting structure to the first jack, disposing thefirst fastener through a first manufacturer-provided opening of thevehicle frame and the opening in the vertical surface of the firstmounting structure, urging the horizontal surface of the first mountingstructure against a bottom surface of a member of the vehicle frame, andsecuring the first fastener to the first mounting structure and themember of vehicle frame, while the horizontal surface of the firstmounting structure is urged against the bottom surface of the secondmember of the vehicle frame.

In a particular example, the method further includes providing a secondjack, a second mounting structure, and a second fastener. The secondjack has an upper region and a lower portion extendable with respect tothe upper portion. The second mounting structure has a horizontalsurface and a vertical surface. The vertical surface of the secondmounting structure extends upwardly from an edge of the horizontalsurface of the second mounting structure and defines an opening. Themethod also includes coupling the second mounting structure to thesecond jack, and disposing the second fastener through a secondmanufacturer-provided opening of the second member of the vehicle frameand the opening in the vertical surface of the second mountingstructure. Furthermore, the method includes urging the horizontalsurface of the second mounting structure against a bottom surface of asecond member of the vehicle frame, and securing the second fastener tothe second mounting structure and the second member of the vehicleframe, while the horizontal surface of the second mounting structure isurged against the bottom surface of the second member of the vehicleframe.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is described with reference to the followingdrawings, wherein like reference numbers denote substantially similarelements:

FIG. 1 is a perspective view of an exemplary utility vehicle includingan attachable leveling system according to one embodiment the presentinvention;

FIG. 2 is a cross-sectional view of the utility vehicle of FIG. 1 takenalong line A-A;

FIG. 3 is a perspective view of one of the installed leveling jacks ofFIG. 2;

FIG. 4 is another perspective view of the installed leveling jack ofFIG. 3;

FIG. 5 is a perspective view of one of the leveling jacks of FIG. 1installed on an angled surface of a utility vehicle;

FIG. 6 is a side view of the leveling jack of FIG. 5 installed on theangled surface;

FIG. 7 is a top view of a set of leveling jacks installed on a frame ofa utility vehicle according to another embodiment of the presentinvention;

FIG. 8A is a perspective view of a frame extension attached to the frameof the utility vehicle of FIG. 7;

FIG. 8B is a perspective view of the frame extension of FIG. 8A detachedfrom the frame;

FIG. 8C is a perspective view of the jacks of FIG. 7 installed on theframe without a frame extension;

FIG. 8D is a perspective view of the jacks of FIG. 7 installed on theframe along with the frame extension of FIGS. 8A-8B;

FIG. 8E is a perspective view showing how a jack of FIG. 7 is installedon the frame in greater detail;

FIG. 9A is a side view of the jacks of FIG. 7 in an unactuated position;

FIG. 9B is a side view of the jacks of FIG. 7 in an actuated position;and

FIG. 10 is a flow-chart summarizing an exemplary method of installing aleveling system on a vehicle frame;

FIG. 11 is a flow-chart summarizing another exemplary method ofinstalling a leveling system on a vehicle frame;

FIG. 12 is a perspective view of a vehicle leveling system mounted on avehicle frame;

FIG. 13 is a perspective view of the vehicle leveling system of FIG. 12exploded from the frame;

FIG. 14 is an exploded perspective view of the vehicle leveling systemof FIG. 12;

FIG. 15 is a perspective view of the frame engaging brackets of thesystem of FIG. 12;

FIG. 16A is a side view of one of the frame engaging brackets of thesystem of FIG. 12 mounted to a vehicle frame with a jack in a stowedposition;

FIG. 16B is a side view of one of the frame engaging brackets of thesystem of FIG. 12 mounted to a vehicle frame with the jack of FIG. 16Bin a deployed position; and

FIG. 17 is a flow-chart summarizing an exemplary method of installing aleveling system on a vehicle frame.

DETAILED DESCRIPTION

The present invention overcomes the problems associated with the priorart, by providing leveling jacks and a method of installing suchleveling jacks onto a vehicle, without drilling new holes into the frameof the vehicle or otherwise permanently modifying the vehicle frame,particularly in “no-drill” zones. In the following description, numerousspecific details are set forth (e.g., bracket types, vehicletype/layout, etc.) in order to provide a thorough understanding of theinvention. Those skilled in the art will recognize, however, that theinvention may be practiced apart from these specific details. In otherinstances, details of well-known leveling practices (e.g., jackplacement, synchronization, power, etc.) and components (e.g., hydraulicsystems, etc.) have been omitted, so as not to unnecessarily obscure thepresent invention.

FIG. 1 is a perspective view of a utility vehicle 100 of the type thatis commonly converted into a recreational vehicle (RV). Utility vehicle100 includes a frame 102 (e.g., frame rails, cross members, etc.), a setof wheels 104, a plurality of leveling jacks 106, and a frame attachment108. In the present embodiment, utility vehicle 100 includes fourleveling jacks 106(1-4), where the fourth jack 106(4) is hidden fromview by front passenger-side wheel 104. Frame attachment 108 representsa bumper, a frame and/or cargo extender, etc. that is attached to frame102.

Utility vehicle 100 also includes a passenger cabin 110 and a floor 112,which are coupled to frame 102. In some embodiments, cabin 110 and/orfloor 112 might be separate components mounted onto frame 102 in a“body-on-frame” configuration, whereas in the case of “uni-body”structures, cabin 110 and/or floor 112 can be formed integrally with themembers (e.g., frame rails, cross-members, etc.) of frame 102. Frame 102can have both “no-drill” and “drill-permitted” zones, where drillingthrough a “no-drill” zone would void a manufacturer's warranty and/orcreate a safety issue. Commonly “no-drill” zones include frame rails andcross-members of frame 102, whereas floor 112 and/or passenger cabin 110typically include “drill-permitted” zones (e.g., those areas not locatedover frame rails, cross members, etc.) that can be drilled throughwithout voiding a warranty or creating a safety hazard.

In FIG. 1, floor 112 is shown representationally as a “drill-permittedzone” and might be, for example, the floor of an RV living space, thefloor of a cargo van, a truck bed, etc. coupled to frame 102. In thefollowing examples, floor 112 will be described as part of a uni-bodyframe 102. However, the invention applies equally if floor 112 is abolt-on component in the body-on-frame configuration. Thus, utilityvehicle 100 represents any vehicle that would benefit from an attachableleveling system, such as a cargo van, a pickup truck, a semi truck, atractor-trailer combination, a trailer, etc. where modifying “no-drill”zones is a concern.

Oftentimes, it is necessary for the structures (e.g., a recreationalcabin, cargo cabin, etc.) coupled to frame 102 of vehicle 100 to beleveled for proper use when parked. While wheels 104 are level enoughfor driving purposes, the attached structures may not sit level whenparked on uneven terrain. To provide further leveling, leveling jacks106(1-4) (only 3 shown) are installed onto frame 102 and can beindependently actuated to raise or lower associated portions of utilityvehicle 100. As will be discussed below, leveling jacks 106 couple tovehicle 100 in ways that do not require new holes to be drilled in a“no-drill” zone of frame 102 and that do not create safety concerns.

FIG. 2 shows the rear end of utility vehicle 100 sectioned along lineA-A of FIG. 1. As shown, leveling jacks 106(1-2) are attached to floor112 adjacent respective frame rails 202(1-2) of frame 102. Here, floor112 is integrated with frame 102 in a uni-body configuration, but inother embodiments, floor 112 can be associated with any body-on-framecomponent that attaches (e.g., with bolts, etc.) to one or more of framerail(s) 202(1-2).

In the example embodiment, each of jacks 106(1-2) is fixed (e.g. bywelding, etc.) to a respective U-bracket 204. A pair of L-brackets 206is adjustably attached to each U-bracket 204 by a set of fasteners(e.g., bolts, etc.) 208 disposed through a plurality of verticallyelongated (slotted) holes 210, which function as a vertical adjustmentfeature. Slotted holes 210 allow jacks 106 to be fixed to a slantedportion of vehicle 100 (e.g., a slanted portion of cabin 110 or floor112, etc.) as will be discussed below. L-brackets 204 are mountingstructures which, in this example, are mounted to floor 112 viafasteners 212 (e.g., bolts, etc.). Unlike frame rails 202(1-2) which are“no-drill” zones, drilling through floor 112 adjacent the frame rails202(1-2) is permitted and, therefore, will not void a manufacturer'swarranty or create a safety concern.

Each U-bracket 204 also has a pair of J-brackets 214 coupled thereto,which function as frame engaging features. Each of J-brackets 214 isadjustably attached a respective one of U-brackets 204 via a respectiveset of fasteners (bolts) 216. The J-brackets 214 associated with aparticular leveling jack 106 are positioned beneath an associated framerail 202 and, therefore, function as frame engaging features that engagethe lower surface of the associated frame rail 202. Accordingly,J-brackets 214 are designed to withstand a jacking force sufficient tolift vehicle 100. When a leveling jack 106 is extended to meet theground, an upward force is transferred from the jack 106 to anassociated frame rail 202 via the jack's U-bracket 204 and J-brackets214, thereby lifting frame 102 via the frame rail 202. BecauseJ-brackets 214 are positioned snugly against frame-rails 202 duringinstallation, very minimal (if any) jacking force is exerted directly onfloor 112.

FIG. 2 also shows that a cross-member 218 can be attached betweenadjacent jacks 106, which helps brace and stabilize the jacks 106 whenlifting frame 102. Cross-member 218 is coupled to each of jacks 106 by aU-bolt 220. Those skilled in the art will recognize that this particularelement (as well as other described elements, even if not explicitlystated) is not an essential element of the present invention. Forexample, the present invention may be practiced without cross-member218. In other embodiments, cross-member 218 can be mountedagainst/coupled to other structures of utility vehicle 100, such as atransmission cross-member, an axle, etc. to provide stability.

FIG. 3 is a perspective view of jack 106(2) attached to floor 112adjacent frame rail 202(2). Only a portion of frame rail 202(2) andfloor 112 are shown for simplicity, and jack 106(2) is tipped backward(into the page) to show more detail. As shown, the cylinder 302 of jack106(2) resides at least partially within the “U” of U-bracket 204.Additionally, each J-bracket 214 includes a lip 222, which is adapted toengage the far side of frame rail 202(2) and prevents J-brackets 214from slipping off of frame-rail 202(2) when jack 106 is actuated and/ordue to motion of vehicle 100 during travel. Lips 222 also prevent jackfrom rotating outward from frame rail 202(2) and possibly damaging floor112 near bolts 212.

FIG. 3 also shows how L-brackets 206 and J-brackets 214 are adjustablymounted to U-bracket 204. Both L-brackets 206 (only one shown) areadjustably mounted to U-bracket 204 by a set of bolts 208 (two in thisembodiment), which pass through respective vertical slots 210 formed ineach L-bracket 206 and behind jack cylinder 302. Slots 210 enable propervertical positioning of J-brackets 214 to the underside of frame rail202(2), even if floor 112 is slanted with respect to the bottom surfaceof frame rail 202(2). Similarly, both J-brackets 214 are adjustablymounted to U-bolt 204 by a set of bolts 216 (two in this embodiment),which pass through respective horizontal slots 224 formed in eachJ-bracket 214 and behind jack cylinder 302. Slots 224 facilitate properhorizontal (lateral) positioning of J-brackets 214 to the underside offrame rail 202(2). Slots 224 thus provide a tolerance to compensate forcoatings (e.g., paint, rust inhibitor, etc.) applied to frame rail202(2), the mounting locations of L-brackets 206, etc. Accordingly,slots 210 and 224 function as vertical and horizontal adjustmentfeatures, respectively, for mounting jack 106 to vehicle 100.

It should also be noted that jack 106 does not include a ram extensionor ground pad in the embodiment shown. As will be apparent, suchcomponents can be attached to the threaded end 304 of the jack ram.Additionally, jack 106 can be any jack that is suitable to theapplication, including one that is driven hydraulically, electronically,and/or manually.

FIG. 4 is a perspective view showing jack 106(2) from another angle.FIG. 4 shows how U-bracket 204 is attached to floor 112 using twoL-brackets 206 and respective bolts 212. Additionally, FIG. 4 shows howeach of bolts 208 passes through and secures both of L-brackets 206 toU-bracket 204.

FIG. 5 shows how a jack 106(3) of the invention can be attached to aslanted floor 512 of the passenger cabin 110 of utility vehicle 100 viathe adjustable L-brackets 206. (Only a portion of floor 512 and framerail 202(1) are shown for simplicity.) Like floor 112, floor 512 andframe rails 202(1-2) of frame 102 are configured as a uni-body.Alternatively, the slanted floor 512 can be part of a body-on-framepassenger cabin.

As shown, the floor 512 has a slight pitch from front to back withrespect to the bottom surface of frame rail 202(1). On the near (right)side of jack 106(3), the slotted holes 210 are positioned lower on bolts208. However, on the far (left) side of jack 106, the slotted holes 210are positioned higher on bolts 208. This difference in positioningillustrates that, although jack 106(3) is fixed to a slanted surface,jack 106(3) can still be positioned perpendicularly with respect to theground, and the J-brackets 214 can be positioned tight to the bottom offrame rail 202(1). FIG. 5 also illustrates that the sets of bolts 208and 216 are secured by respective sets of nuts 226 and 228. Like jacks106(1-2), a cross-member 218 can optionally be attached between thefront set of jacks 106(3-4) using U-bolts 220 and associated nuts 230for additional stability. In the embodiment of FIG. 1, jack 106(4) nearthe driver-side front wheel is attached to vehicle 100 substantiallysimilarly as jack 106(3).

FIG. 6 is a side view showing jack 106(3) of FIG. 5. FIG. 6 better showsthe slant of floor 512 in comparison to the vertical orientation of jack106(3) and the horizontal bottom surface of frame rail 202(1). Likejacks 106(1-2), when jack 106(3) is in a stowed position, the weight ofjack 106(3) is carried by L-brackets 206, which are secured to cabinfloor 512 via bolts 212 and nuts 232. Washers 230 can be used betweenthe bolts 212 and the floor 512 (or floor 112) to distribute the weightof the jack 106 if desirable. Like floor 112, drilling through floor 512is permitted by the manufacturer in areas adjacent frame rail 202(1)and, therefore, doing so does not constitute drilling through a“no-drill” zone in frame 102, which could void a manufacturer's warrantyand/or create a safety concern.

A method for installing each of jacks 106(1-4) will now be described.First, the jack 106 is installed to the floor (e.g., the floor 512 ofthe passenger cabin, etc.) of the vehicle 100 by drilling holes throughthe floor and, optionally, painting over the holes to prevent prematurebreakdown (e.g., rusting) of exposed metal. Then, the jack 106 isloosely secured to the floor by positioning fasteners 212 through thefloor and L-brackets 206. Jack 106 is positioned so that the J-brackets214, which have been attached to U-bracket 204, are positioned under thedesired portion of the frame (e.g., under an associated frame rail 202)and the cylinder 302 of jack 106 is straight in all directions (e.g.,front-to-back, left-to-right, etc.). Additionally, J-brackets 214 can behorizontally (laterally) adjusted (via slots 224) so that lip 222engages the far side of the frame rail 202. Then, jack 106 is lifted(e.g., with a separate floor jack, with jack 106 itself, etc.) so as tolift the vehicle 100 (or at least apply some lifting force to thevehicle 100) via the J-brackets 214 and frame 102. The fasteners 210,216, and 212 are then tightened to desired torque specification(s).Optionally, the fasteners 212 can be tightened after the fasteners 210and 216. Once jack is secured in a fixed position with respect to frame,vehicle 100 can be lowered. If jack 106 is not in the correct position,the above procedure can be repeated. The above procedure is performedfor all jacks 106 being attached to vehicle 100.

FIG. 7 is a top view of a rear portion of a frame, including two framerails 702(1-2) and a cross-member 712, of an alternative utility vehicle700. Vehicle 700 is also shown to include a rear axle 704, a spare tire706, and a plurality of wheels 714 coupled to rear axle 704. A pluralityof jacks 708(1-2), in accordance with another embodiment of theinvention, are attached to the frame near the ends 710(1-2) ofrespective frame rails 702(1-2). As shown, jacks 708 (1-2) are locatedbehind the rear axle 704, whereas the transmission and engine would belocated forward of the rear axle 704, toward the front of vehicle 700.Additionally, jack 708(1) is placed near the outer side of frame rail702(1), whereas jack 708(2) is placed near the inner side of frame rail702(2). However, jacks 708(1-2) can be placed on either side of framerails 702(1-2) as desired depending on the particular application (e.g.,to avoid interfering with other components installed near the framerails 702, etc.).

FIG. 8A shows a perspective view of the ends 710(1-2) of frame rails702(1-2) having a frame attachment 800 mounted thereto. Frame rails702(1-2) receive complementary portions (not shown) of frame attachment800 therein. Frame rails 702(1-2) and frame attachment 800 are affixedtogether using a set of bolts 802 through the frame rails 702(1-2) andtheir associated portions of frame attachment 800. Frame attachment 800can be a bumper, a frame extension, etc.

FIG. 8B is an exploded perspective view showing the complementaryportions 804(1-2) of frame attachment 800 removed from frame rails702(1-2). As shown, each of frame rails 702(1-2) includes a set offactory apertures 806 (e.g., through-holes made by the manufacturer)formed therein to facilitate the attachment of frame attachment 800.Similarly, each of the complementary portions 804(1-2) of frameattachment 800 also include factory apertures 808. Bolts 802 passthrough the respective factory apertures 806 and 808 to attach the frameattachment 800 to frame rails 702(1-2).

FIG. 8C shows frame rails 702(1-2) with jacks 708(1-2) installed viaseveral of the factory apertures 806 (FIG. 8B). Each of jacks 708(1-2)is bolted to a respective one of frame rails 702(1-2) by passing bolts812 through the associated set of factory apertures 806. Bolts 812replace the corresponding bolts 802 (FIG. 8A) and are sized to passthrough both U-bracket 810 and the associated frame rail 702.Optionally, U-brackets 810 can include additional apertures to beinterchangeable with U-bracket 204. Each of jacks 708(1-2) is alsocoupled to a cross-member 814 via a U-bolt 816 for stabilization whilelifting vehicle 700. Additionally, each of jacks 708(1-2) includes afoot pad 818 for dispersing the force applied to the ground when jacks708(1-2) are actuated.

Because jacks 708(1-2) are attached to frame rails 702(1-2) usingexisting apertures 806 in the frame rails 702 formed by themanufacturer, no new apertures need to be created in frame rails702(1-2). Accordingly, attaching the jacks 708(1-2) does not requirepermanent frame modifications that would void the manufacturer'swarranty and/or create safety concerns (e.g., by weakening the vehicleframe, etc.).

FIG. 8D shows frame rails 702(1-2) with both jacks 708(1-2) and frameattachment 800 installed. In this configuration, bolts 812 replace bolts802 (FIG. 8A) and are sized to couple U-brackets 810 to the respectiveframe rails 702(1-2). Like above, attaching the jacks 708(1-2) does notrequire frame modifications that would void the manufacturer's warrantyand/or create a safety concern (e.g., by weakening the vehicle frame).

FIG. 8E shows how jack 708(1) mounts to frame rail 702(1) via factoryapertures 806 in greater detail. In particular, jack 708(1) is fixed toU-bracket 810 (e.g. by welding). A plurality of apertures 820(1-2) areformed through a first arm 822(1) of U-bracket 810, whereas acomplementary plurality of apertures 820(3-4) (not shown) are formedthrough second arm 822(2) of U-bracket 810 in coaxial alignment withapertures 820(1-2). Additionally, when apertures 820(1) and 820(3) arecoaxially aligned with a first factory aperture 806(1), then apertures820(2) and 820(4) can be coaxially aligned with a second factoryaperture 806(2). Thereafter, a first bolt 812(1) is passed throughapertures 820(1), 820(3), factory aperture 806(1), and a correspondingfactory aperture 806 (not shown) that is formed through the far side offrame rail 702 in coaxial alignment with aperture 806(1). Similarly, asecond bolt 812(2) is passed through apertures 820(2), 820(4), factoryaperture 806(2), and a corresponding factory aperture 806 (not shown)that is formed through the far side of frame rail 702 in coaxialalignment with aperture 806(2). Thereafter, bolts 812(1-2) are securedby nuts on the threaded ends thereof. Jack 708(2) can be mounted toframe rail 702(2) in substantially the same way, after whichcross-member 818 can be installed between jacks 708(1-2).

Thus, U-bracket 810, apertures 820, and bolts 812 function as frameengaging features in this embodiment, which engage complementarymanufacturer-provided features (e.g., factory apertures 806) on theframe.

FIG. 9A is a side view of the rear portion of vehicle 700, while jacks708(1-2) are in a stowed position (only jack 708(2) shown). It should benoted that rear wheels 714 are resting on the ground and there issignificant clearance between jacks 708(1-2) and the ground.Additionally, cross-member 814 is disposed sufficiently lower than sparetire 706 to allow for removing spare tire 706 for use without removingjacks 708.

FIG. 9B is a side view of the rear portion of vehicle 700, while jacks708(1-2) are in an deployed position. It should be noted that rearwheels 714 are raised off of the ground, while foot pads 818 of jacks708(1-2) are pressing on the ground.

Several embodiments of jacks according to the invention have now beendescribed. It will be readily apparent that such embodiments do not haveto be used in isolation. For example, the jacks 202 and the jacks 708can be used on the same vehicle. More particularly, a pair of jacks 202might be used in the front under the passenger cabin of the vehicle,while a pair of jacks 708 might be attached to the rear of the frame.Additionally, the jacks 202 and 708 can be placed inboard and/oroutboard of the frame rails as discussed above as the applicationrequires.

Moreover, while jacks 106 and 708 have been described as assembledunits, it should be recognized that U-bracket 204, L-brackets 206,J-brackets 214, and the associated fasteners can be provided as a kitfor retrofitting an existing jack, for example, by welding U-bracket 204thereto. Similarly, U-bracket 810 and fasteners 812 associated with jack708 can also be provided as a kit to retrofit a jack.

FIG. 10 shows a flowchart summarizing an exemplary method 1000 ofmounting a jack of a leveling system to a vehicle according to theinvention. In a first step 1002, a jack having a first set of supportfeatures (e.g., a first set of brackets, etc.) and a second set ofsupport features (e.g., a second set of brackets, etc.) adjustablymounted thereto is provided. In a second step 1004, the first set ofsupport features are mounted to a surface (e.g., a floor, etc.) of thevehicle adjacent the frame of the vehicle. In a third step 1006, thesecond set of support features is positioned under the frame, and in afourth step 1008, the jack is lifted such that the second set of supportfeatures engages an underside of the frame. In a fifth step 1010, thejack is secured in position relative to the frame and to the surface ofthe vehicle, for example, by securing the first and second sets ofsupport features to the jack and securing the first set of supportfeatures to the surface of the vehicle.

FIG. 11 shows a flowchart summarizing another exemplary method 1100 ofmounting a jack of a leveling system to a vehicle according to theinvention. In a first step 1102, a jack including a first frame engagingfeature and a second frame engaging feature is provided. In an optionalsecond step 1104, a frame attachment is removed from the frame to exposemanufacturer-provided features of the frame. In a third step 1106, thejack is aligned with the frame such that the first frame engagingfeature is aligned with a first manufacturer-provided feature of theframe and the second frame engaging feature is aligned with a secondmanufacturer-provided feature of the frame. In a fourth step 1108, thefirst frame engaging feature is secured to the firstmanufacturer-provided feature, and in a fifth step 1110, the secondframe engaging feature is secured to the second manufacturer-providedfeature.

FIG. 12 shows a perspective view of a vehicle leveling system 1200according to another embodiment of the present invention. System 1200 isshown mounted to a vehicle frame 1202, just behind the rear axle arches1204, without modifying (e.g., cutting, welding, etc.) frame 1202.Furthermore, system 1200 includes a set of jacks 1206 adjustably mountedto frame 1202 by a respective set of frame engaging brackets 1208. Jacks1206 are, for example, hydraulic jacks that are extendable between astowed position (FIG. 16A) and a deployed position (FIG. 16B).

FIG. 13 shows a perspective view of vehicle leveling system 1200exploded from frame 1202. System 1200 mounts to frame 1202 with a set offour bolts 1300, four lock-washers 1302, and four nuts 1304. Frame 1202includes four apertures 1306 formed originally during the manufacturingof frame 1202. System 1200 can, therefore, advantageously mount frame1202 with no need to modify frame 1202.

FIG. 14 shows an exploded perspective view of system 1200. As shown,each of jacks 1206 adjustably mounts to a respective one of brackets1208 with a set of four bolts 1400 and four nuts 1402. Each of jacks1206 includes a set of mounting brackets 1404 fixed thereto. Brackets1206 include a vertical column of apertures 1406 for selectivelyadjusting the vertical fixed position of jacks 1206 with respect tobrackets 1208, by selecting which of apertures 1406 are used to mountjacks 1206 to brackets 1208. Of course, by adjusting the verticalposition of jacks 1206 with respect to brackets 1208, the verticalposition of jacks 1206 with respect to frame 1202 is also adjusted. Inthe example embodiment, apertures 1406 are horizontal elongated slots tofacilitate the horizontal adjustment of jacks 1206 with respect tobrackets 1208.

FIG. 15 shows a perspective view of brackets 1208 removed from system1200. Each of brackets 1208 includes a frame mounting portion 1500 and ajack mounting portion 1502, which are configured to be mounted to frame1202 and jack 1206, respectively.

Frame mounting portion 1500 includes a horizontal surface 1504, avertical surface 1506, and a lip 1508. Horizontal surface 1504 isadapted to engage, and urge against, the bottom surface of frame 1202when jacks 1206 are deployed. Vertical surface 1506 is adapted to engagethe planar, outer, vertical surface of frame 1202. Furthermore, verticalsurface 1506 defines a plurality of apertures 1510 through which bolts1300 (shown in FIG. 3) are disposed to mount brackets 1208 to frame1202. Apertures 1510 are vertical elongated slots which allow horizontalsurfaces 1504 of brackets 1208 to be moved up as tight as possibleagainst frame 1202.

When system 1200 is coupled to frame 1202, bolts 1300 are left slightlyloose while jacks 1206 are deployed such that the weight of the vehicleis urging down against horizontal surface 1504. While the weight of thevehicle is urging against horizontal surfaces 1504, bolts 1300 aretightened, thus securing brackets 1208 to frame 1202. Lip 1508 isconfigured to engage the planar vertical inner surface of frame 1202,such that frame 1202 is interposed between lip 1508 and vertical surface1506. Together, vertical surface 1506 and lip 1508 restrain rotation ofbrackets 1208 with respect to frame 1202.

Jack mounting region 1502 includes three horizontal rows of apertures1512 that facilitate selective horizontal and vertical adjustment ofbracket 1208 with respect to jack 1206. As shown, each of apertures 1512is a horizontal elongated slot configured to receive a bolt 1400.Bracket 1208 further includes a plurality of gussets 1514, which providestructural reinforcement to bracket 1208.

FIG. 16A is a side view of one of brackets 1208 mounted to frame 1202,with jack 1206 in a stowed position. Bracket 1208 further includes a setof two rear supports 1600, only one of which is visible in the view ofFIG. 16.

FIG. 16B is a side view of bracket 1208 with jack 1206 in a deployedposition, with a lower portion 1602 of jack 1206 extending from an upperportion 1604 of jack 1206.

FIG. 17 is a flowchart summarizing a method 1700 for attaching aleveling system to a vehicle frame. In a first step 1702, a jack isprovided. Then, in a second step 1704, a mounting structure having ahorizontal surface and a vertical surface is provided. Next, in a thirdstep 1706, the mounting structure is coupled to the jack. Then, in afourth step 1708, a fastener is provided. Next, in a fifth step 1710,the fastener is coupled to the mounting structure and through amanufacturer-provided opening of a vehicle frame. Then, in a sixth step1712, the mounting structure is urged against the vehicle frame.Finally, in a seventh step 1714, the fastener is secured to the mountingstructure and the frame while the mounting structure is being urgedagainst the frame. The particular order of the steps of method 1700 canbe altered. For example, the jack can be coupled to the mountingstructure after the mounting structure is secured to the frame.

The description of particular embodiments of the present invention isnow complete. Many of the described features may be substituted, alteredor omitted without departing from the scope of the invention. Forexample, alternative brackets between the jack cylinder and frame (e.g.,one that receives force from the top of the jack cylinder, etc.) can beemployed. As another example, although some example embodiments weredescribed with respect to the rear of a vehicle, either embodiment couldbe used to fix a jack near the front of a vehicle, by using the floor ofthe cab or the attachment point of the front bumper. As still anotherexample, a different cross-member/brace (e.g., a flat plate, etc.) couldbe used between adjacent jacks to stabilize them. These and otherdeviations from the particular embodiments shown will be apparent tothose skilled in the art, particularly in view of the foregoingdisclosure.

We claim:
 1. A vehicle leveling system comprising: a first jackextendable between a stowed position and a deployed position, said firstjack having an upper portion and a lower portion extendable with respectto said upper portion; and a first frame engaging bracket coupled tosaid upper portion of said first jack, said first frame engaging bracketincluding a horizontal portion, a first side wall, and a second sidewall, said horizontal portion having a supporting surface, a first sideedge, and a second side edge, said first side wall extending upwardlyfrom said first side edge and having a first surface, said second sidewall extending upwardly from said second side edge and having a secondsurface, said supporting surface, said first surface, and said secondsurface defining a receiving space for receiving a member of a vehicleframe, said first frame engaging bracket additionally defining a firstfastening aperture; and wherein when said first frame engaging bracketis positioned with said member of said vehicle frame in said receivingspace, said supporting surface of said horizontal portion of said firstframe engaging bracket is positioned to urge against a bottom surface ofsaid member of said vehicle frame; when said first frame engagingbracket is positioned with said member of said vehicle frame in saidreceiving space, said first surface of said first side wall ispositioned adjacent a first side of said member of said vehicle frame,and said second surface of said second side wall is positioned adjacenta second side of said member of said vehicle frame; and when said firstframe engaging bracket is positioned with said member of said vehicleframe in said receiving space, said first fastening aperture is alignedwith a first manufacturer-provided aperture formed in said member ofsaid vehicle frame according to an original design of said vehicle; andwhereby said upper portion of said first jack can be rigidly fixed tosaid member of said vehicle frame without modifying said member of saidvehicle frame.
 2. The vehicle leveling system of claim 1, wherein saidfirst side wall of said first frame engaging bracket defines said firstfastening aperture and a second fastening aperture disposed to bealigned with a second manufacturer-provided aperture in said member ofsaid vehicle frame when said first fastening aperture of said first sidewall is aligned with said first manufacturer-provided aperture in saidmember of said vehicle frame.
 3. The vehicle leveling system of claim 2,wherein: said first fastening aperture of said first frame engagingbracket is a first vertically elongated slot; and said second fasteningaperture of said first frame engaging bracket is a second verticallyelongated slot.
 4. The vehicle leveling system of claim 1, wherein saidfirst fastening aperture of said first frame engaging bracket is a firstvertically elongated slot.
 5. The vehicle leveling system of claim 1,wherein at least one of said first side wall and said second sidewall ofsaid first frame engaging bracket includes a lip extending upwardly fromsaid horizontal portion of said first frame engaging bracket.
 6. Thevehicle leveling system of claim 5, wherein said lip extends upwardly asufficient distance to abut said first side of said member of saidvehicle frame; and whereby said horizontal portion, said second sidewall, and said lip limit the rotation of said member of said vehicleframe within said frame engaging bracket.
 7. The vehicle leveling systemof claim 1, further comprising an adjustment feature for adjusting afixed position of said first frame engaging bracket with respect to saidupper portion jack.
 8. The vehicle leveling system of claim 7, whereinsaid adjustment feature includes a vertical adjustment feature forvertically adjusting said fixed position of said first frame engagingbracket with respect to said upper portion of said jack.
 9. The vehicleleveling system of claim 8, wherein: said first jack includes a mountingbracket coupled to said upper portion of said first jack; said verticaladjustment feature includes a first vertical column of apertures formedin at least one of said first frame engaging bracket and said mountingbracket of said first jack.
 10. The vehicle leveling system of claim 9,wherein the other of said at least one of said first frame engagingbracket and said mounting bracket of said first jack includes a firsthorizontal row of apertures facilitating horizontal adjustment of saidfixed position of said mounting bracket of said first jack with respectto said first frame engaging bracket.
 11. The vehicle leveling system ofclaim 10, wherein: said first vertical column of apertures includes avertical column of horizontally elongated slots; and said firsthorizontal row of apertures includes a horizontal row of horizontallyelongated slots.
 12. The vehicle leveling system of claim 7, whereinsaid adjustment feature includes a horizontal adjustment feature foradjusting the fixed horizontal position of said first frame engagingbracket with respect to said first jack.
 13. The vehicle leveling systemof claim 12, wherein: said first jack includes a mounting bracketcoupled to said upper portion of said first jack; and said horizontaladjustment feature includes a first horizontal row of apertures formedin at least one of said first frame engaging bracket and said mountingbracket of said first jack.
 14. The vehicle leveling system of claim 13,wherein said first horizontal row of apertures includes a plurality ofhorizontally elongated slots.
 15. The vehicle leveling system of claim1, further comprising an adjustment feature for vertically adjusting thefixed position of said first frame engaging bracket with respect to saidmember of said vehicle frame.
 16. The vehicle leveling system of claim1, further comprising: a second jack extendable between a stowedposition and a deployed position, said second jack having an upperportion and a lower portion extendable with respect to said upperportion; and a second frame engaging bracket coupled to said upperportion of said second jack, said second frame engaging bracketincluding a horizontal portion, a first side wall and a second sidewall, said horizontal portion having a supporting surface, a first sideedge, and a second side edge, said first side wall extending upwardlyfrom said first side edge and having a first surface, said second sidewall extending upwardly from said second side edge and having a secondsurface, said supporting surface, said first surface, and said secondsurface defining a second receiving space for receiving a second memberof said vehicle frame, said second frame engaging bracket additionallydefining a first fastening aperture; and wherein when said second frameengaging bracket is positioned with said second member of said vehicleframe in said second receiving space, said supporting surface of saidhorizontal portion of said second frame engaging bracket is positionedto urge against a bottom surface of said second member of said vehicleframe; when said second frame engaging bracket is positioned with saidsecond member of said vehicle frame in said second receiving space, saidfirst surface of said first side wall of said second frame engagingbracket is positioned adjacent a first side of said second member ofsaid vehicle frame, and said second surface of said second side wall ofsaid second frame engaging bracket is positioned adjacent a second sideof said second member of said vehicle frame; and when said second frameengaging bracket is positioned with said second member of said vehicleframe in said second receiving space, said first fastening aperture ofsaid second frame engaging bracket is aligned with a firstmanufacturer-provided aperture formed in said second member of saidvehicle frame according to said original design of said vehicle; andwhereby said upper portion of said second jack can be rigidly fixed tosaid second member of said vehicle frame without modifying said secondmember of said vehicle frame.
 17. The vehicle leveling system of claim1, wherein said fastening aperture is formed in said first side wall orsaid second side wall.